Stored XSS Vulnerability in JetBrains Datalore Affecting Notebook Charts
CVE-2026-123288

5.4MEDIUM

Key Information:

Vendor

Jetbrains
Status
Datalore
Vendor
CVE Published:
6 November 2026

What is CVE-2026-123288?

JetBrains Datalore versions prior to 2026.4 are susceptible to a stored XSS vulnerability that can be exploited through links in notebook charts using the Vega editor. This flaw allows unauthorized users to inject malicious scripts that can compromise data integrity and user security within affected notebooks.

Affected Version(s)

Datalore 0 < 2026.4

References

https://www.jetbrains.com/privacy-security/issues-fixed/

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.